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Diesel Engine Diagnostics

CBT 31 questions

First 5 of 31 questions — with answers

The correct answer is marked. Unlock the rest to study the whole test, online or offline.

  1. Question 1

    A decreased pH of the main lubricating oil has been observed. What are the TWO most likely causes? Select the TWO correct answers.
    • Faulty stuffing box.
    • High sulphur content in the fuel.
    • High TBN of the cylinder oil.
    • Low sulphur content in the fuel.

  2. Question 2

    A low dispersancy of the main lubricating oil has been observed during a spot test. What is the most likely cause? Select the ONE correct answer.
    • Ageing of the oil.
    • Ineffective oil filtering.
    • Low oil level in the sump.
    • Low viscosity of the oil.

  3. Question 3

    An increased cylinder box temperature near one scavenge box has been observed. What are the most likely causes? Select the TWO correct answers.
    • Too much cylinder oil.
    • Dirty air cooler.
    • Worn piston rings.
    • Not enough cylinder oil.

  4. Question 4

    An increased temperature of ONE main bearing has been observed. What are the TWO most likely causes? Select the TWO correct answers.
    • Seizure in the main bearing.
    • Engine overload.
    • High temperature of the lubricating oil.
    • Cylinder overload.

  5. Question 5

    High contamination of the main lubricating oil has been observed during the spot test. What is the most likely cause? Select the ONE correct answer.
    • Ineffective oil filtering.
    • High sulphur content in the fuel.
    • Ineffective oil cooling.
    • Low viscosity of the oil.

Preview — 5 of 31 questions

You are seeing the first 5 questions with answers. Unlock the remaining 26 to study the whole test — online or offline.

About this CBT test

Diesel Engine Diagnostics is a CBT test with 31 questions and verified answers. Common topics include: increasingly negative, deviation causes, parameters commonly, temperature difference, combustion pressure, diesel engine, model diagram, cause.

You can practise the free questions online — one at a time, with the correct answer — or unlock the whole test and download it to study offline, without internet.

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